Oh, Oh.....Rotax ??? That'd be a deal breaker for me.
IMHO, the Europeans (BMW excepted) STILL have a lot to learn about how North Americans use their bikes AND how the bikes are expected to last. I had a guy come in the yard about 2 weeks ago looking for a CDI box for a '05 or '06 Aprilia somethingorother. Seems that a lot of them had problems and the CDI's are on back order from Aprilia (and thus Bosch) and he's looking at ~4-6 MONTHS before they show up.
Sounds exactly like the parts supply problems we used to have with Ducati, Ossa, and other European bikes 30 years ago. Plus ca change.....
Of course the Buell MAY have Nippon Denso electrics since HD is now buying so many parts from Japan.....ND, Showa, Nissin, etc etc. In that case, it might not be TOO "dangerous" a purchase.....
....but I, personally, would want to see a HUGE amount of reliability demonstrated before laying out the kind of coin they'll be asking.
My .02.....